The secret to a safe and courteous interaction is to slow to a minimal speed disparity as you approach. That's what I do. If I see ear buds, I very slowly ease around them. If I don't see buds, I say in a conversational tone "I am easing around YOUR left." Then I ease around and say something polite when I do. Kids always get complimented on their bike and dogs are often told they are good doggies.